Cutting-machine



I. C. BUCKMINSTER.

CUTTING MACHINE.

APPLICATION FILED MA'YII. I916.

Patented July 27, 1920.

7 SHEETS-SHEET I.

I. C. BUCKMINSTER. CUTTING MACHINE.

APPLICATION FILED MAYI7. 1916.

1,347,615. Patented July 27,1920.

7 SHEETSSHEET 2.

I. C,- BUCKMINSQER. cunme MACHIN E APPLICATION .FILED MAY 17, I916.

1,347, 5, PatentedJuly 27,1920.

7 SHEETS-SHEET 3.

2 Fig.3.

l. C. BUCKMINSTER.

CUTTING MACHINE.

APPLICATION FILED mwn. 191s.

Patented July 27, 1920.

7 SHEETS-SHEET 4.

ww/ NNN wwwww @KQM I. C. BUCKMINSTER. cumwa MA'C HI NE. APPLICATIONFILED MAY 17. 1916.

1,347, 6 1 5. Patent d uly 27, 1920.

7 SHEETSSHEET 5.

Fig. 5.

l. C. BUCKMINSTER.

CUTTING MACHINE.

APPLICATION FILED MAYI7. 1916.

1,347, 6 1 5 I Patented July 27, 1920.

7 SHEETS-SHEET 6.

|.-c. BUCKMINSTER.

CUTTING MACHINE. APPLICATION FILED MAY '7. 1916. 1,347,615, PatentedJuly 27, 1920.

7 SHEETS-SHEE UNITED STATES PATENT OFFICE.

IRA C. B CKMINSTER, CRBEVERLY, MASSACHUSETTS, ASSIGNOR, BY MESNE AssIGN-MENTS, To UNITED snon MACHINERY CORPORATION, or PATERSON, NEW JERSEY,

A CORROBTATIQN .05 NEW JERSEY.

CUT ING-MACH NE. 7

Application filed May 17,

To all whom it may concern:

Be it known that, I,-IRA C. BUCKMINsTER, a citizen of the United States,residing at Beverly, inthe county of Essex and State of Massachusetts,have invented certainlmprovements in CuttingMachines, of which thefollowing --des'cription, in connection with the accompanyingdrawings,is a specification, like reference characters on the drawings indicatinglike parts in the several figures. V

This invention rel-ates to 'machines for producing blanks from sheetmaterial, and is herein shown as embodied in a machine for dieing outheel lifts for use in the manufacture of boots and shoes. In its broaderaspects, however, the invention, in :many of its features, isnotlimit-ed to dieing-out machines, but is of broader applicability tomachines of various types; nor is the invention restricted to theproduction of articles of the precise character herein shown.

An important object of the invention is to provide a machine of thisclass which shall perform its operations rapidly and effectively with aminimum of waste-of the stock. A further object is to provide a machinewhich shall operate with an economy of power and without undue wear.

To the above and other ends, an important feature of the inventionconsists in novel means for effecting a positive and exact feed of thestock. In the construction shown, wherein the blanks are produced by theaction of a cutting die, the feeding ofthe stock is effected by lateralmovement of the die. More specifically, the illustrated constructionprovides means for cutting out each blank progressively in twosuccessive steps, with means for moving the die to feed the stock in theinterval between the two cutting operations while the edge of the die isin efiec-tive engagement with the stock. An important advantage infeeding the stock by movement of-the die is that positive advance of thestock the precise dis'-' tan e required to bring it into position forthe cutting of each succeeding blank is insured, and as a result thecuts may be made close together with a minimum-of waste.

Another important feature of the invention, also contributing to economyin the use of the stock, consists in novel means for determinin theinitial position of the sheet Specification of Letters Patent. PatentedJuly 27 1920,

1916. Serial Nor 98,199.

of stock at the beginning of a seriesof operations. The illustratedmachine is adapted to cut blanks in successive rows from the side of asheet, and includes-a pair of stops for determining different successiveinitial positions of the sheet to cause the blanks in each row to be cutfrom portions of the stock which are opposite to the intervals betweenthe cuts of the preceding row. In the use of'dies with Curved or taperedends the rows of cuts may thus be made to overlap and a portion of stockremaining between twocuts in one row may .be utilized for a portion of ablank in the next row. In order to insure further the proper positioningof the stock for this result, the machine herein shown includes .an edgeguide for the stock and means for'shearing off a portion .ofthe wastebetween cuts to provide edges for subsequent engagement with said guide.7

The invention provides, further, novel means for operating the stockpositioning stops to render them alternately effective. The machineherein shown is caused toistop at the end of'each series of operationsWhereby a row of blanks are out from the sheet, in order to permit thestock to be reinserted in proper position for the next row of cuts; andin this construction the stops. are operated by the starting andstopping of :the machine to cause them to be alternately projected inoperative position.

Still another feature of. the invention consists in novel means forcontrolling the operation of the machine to cause it to stop at the endof each series of operations. According to this feature the stopping ofthe machine is effected through mechanism controlled by engagement withthe stock. As long as sufficient stock remains in the line of cuts toform a complete blank the operation of'the machine continues, and thema-v chine is stopped in time to avoid the possibility of cutting anincomplete blank.

Other novel and important features of the invention reside in. thegeneral organization of the machine for the purposes in view, in meansfor supporting the stock to assist the die in its feeding movement andfor insuring against accidental displacement of the stock, in theprovision for various adjustments, and in certain details ofconstruction and combinations of parts, all

of which will now be described with reference to the accompanyingdrawings and pointed out in the claims.

In the drawings, v Figure 1 is a view in front elevation of a machine inwhich the invention is embodied,

Fig. 2 is a side elevation showing the ma- 7 chine as viewed from theleft in Fig. 1,

Fig. 3 is a view on an enlarged scale of a portion of the machine asseen in Fig. 1, showing the parts in greater detail, portions beingsectioned in order to show the interior construction more-clearly, v

- Fig. 4 is a plan-view of the portion of the machine seen in Fig. 3,

Fig. 5 is a side elevation showing the portion of the machine seen inFigs. 3 and 4 as viewed fromthe left in said figures,

Fig. 6 shows detached and in front elevation mechanism with which themachine is provided for determining the initial position of the stock,

Figs. 7 and 8 are detail views of portions of the mechanism seen in Fig.6,

Fig. 9 shows in front elevation mechanism for effecting adjustment ofthe position controlling means seen in Fig. 6,

Fig. 10 shows in front elevation'means through the action of which themachine is brought to a stop after a row of blanks has been cut,

Fig. 11 is a detail view of portions of the mechanism that cooperatewith the parts seen in Fig. 10 to control the stopping of the machine,

Fig. 12 is a detail of a portion. of the clutch controlling means,

. Figs. 13. and 14 show in detail the shape and relation of differentcams through which the operative movements of the machine are effected,and 1 Fig. 15 is a diagrammatic plan view illustrating the relativelocations of the cuts in a sheet of stock.

The operative portionsof the machine are supported by a frame 2; andthemachine comprises, in general, a stock support 4, a die 6 movableupwardly in'two successive steps to cut the stock andmovable alsolaterally in the interval between the two cutting movements to feed thestock, and a cutting block 8 above the die having vertical movements incorrelation with'the movements of the die, as will be hereinafterexplained. Operative movements are imparted to the cutting block and thedie from a cam shaft 10 mounted in a bracket 12 on the frame 2 andarranged to receive operative movement from a pulley 14 through asuitable clutch, such as a Horton clutch, of which the usual controllingmember is seen at 16, this member having in its Periphery a notch 18 toreceive a latch 20. The latch 20 is secured to a rock shaft 22 arrangedto be rocked by means of a foot treadle 24 through connectionscomprising an arm 26 secured to the shaft 22 and a rod 28' connected atits opposite ends to the arm 26 and the treadle 24 respectively. Aspring 30 connected to the arm 26 holds the rock shaft 22 normally insuch position as to cause the latch 20 to engage in the notch 18 of themember 16 and maintain the pulley 14 and the shaft 10 in disconnectedrelation. WVhen the treadle 24 is depressed the member 16 is releasedand the operative parts of the machine are driven until such time as thelatch 20 is again permitted to engage in the notch 18 to effect thedisconnection of the clutch.

The cutting block 8 is carried by a plun:

ger 32 which' is mounted for vertical mo'vement in a socket in the upperportion of the frame 2 and is maintained normally in its uppermostposition by means of springs 34 which are connected at their oppositeends respectively to a rod 36 in the frame and a rod 38 projecting fromthe plunger 32 through vertical slots 40in the frame. The plunger 32 andtheblock 8 are reciprocated by means of a path cam 42 (Fig. 13) on theshaft 10 through connections including a bell crank44 provided with aroll 46 that runs in a groove 48 of the cam 42, and a bell crank50connected by a link 52 to the knee joint of a toggle 54 the arms ofwhich are pivoted respectively on the rods 36 and 38,

the two bell cranks being connected through .rods 56' and 58 and anintermediate toggle 60. The rods 56 and 58 are guided in lugs 62 and 64.respectively, as seen in Fig. 2. When the machine is idle the toggle '60is broken. as shown, and the block 8 is maintained by the springs .34 inits uppermost position to permit a sheet of stock to be freely insertedbetween the block and the support 4. The knee joint of the toggle isconnected by means of a link 66 to a lever 68 fast on the rockshaft 22to which the clutch controllinglatch 20 also is secured, as here- 1inbefore explained, By reason of this construction the operation of thetreadle 24 to start the machine serves at the same time,

through the straightening of the toggle 60, to force the block 8downward toward the support 4. By reference to Fig. 13 it will be seenthat when the machine is at rest the roll 46 is positioned in aconcentric portion.

a of the cam groove 48, which, as compared with an opposite concentricportion 0, is relatively near to the axis of the cam. The block 8 istherefore depressed through the action of, the treadle to its lowermostposition in readiness to oppose the cutting action of the die and inthis position is in substantial engagement with the stock. Immediatelyafter the first upward cutting movement of the die, the roll 46 iscaused to trav erse' the portion 6 of the groove 48, whereby the, block8 is lifted sufiiciently to permit the stock to be fed by the lateralmovement while the roll 46traverses the concentric portion a of the camgroove to the starting po sition indicated in the drawings, during whichtime the die is lowered and returned to its first position in readinessfor the next cut. This cycle of operation is repeated until a row ofblanks has been cut entirely across the sheet. In order to renderit'unnecessary forthe operator to keep his foot upon the treadle, thelever 68 carries a laterally projecting lug 70 which hooks over a springcatch '72 when the treadle is first depressed, and the catch 7 2 thusinsures the continuous operation of the machine until the lug 70 isautomatically released in a manner which will be subsequently explained.It will be apparent by reference to 'the drawings that the movements ofthe cutting block after its initial depression by the treadle arecomparatively short.

The stock support 4 includes a plunger 7 4 which fits in a verticalsocket formed in the frame 2 and rests upon a coil spring 76.

The support is thus permitted to yield slightly in order to accommodatethe machine to variations in the thickness of the stock, as will behereinafter explained. The

support 4 comprises two side portions which are grooved to provideguideways 78 for sliding plates 80 and 82, which constitute a stocksupporting table, these plates being movable in unison with the stockfeeding movements of the die 6. It follows that during the forwardfeeding movement of the die there is no relative movement between thestock and the plates 80 and 82 but that during the backward movement ofthe.

die the plates must slide relatively to'the stock, the plate 82 beingpositioned at that time beneath that portion of the stock which is infront of the die. In order to prevent the stock from being displacedduring the retraction of the die and the plates, the plate 82 is formedwith two slots 84, and bolted to the support 4 is a standard'86 whichpresents two parallel bars 88 positioned within the slots 84 andprojecting slightly above the upper surface of the plate 82. Above thebars 88 is a clamp member 90 carried by the reciprocatory plunger 32 towhich the block 8 is attached, the lower surface of this member beingsubstantially in the plane of the lower surface of the block. The bars88 and the member 90 thus serve as clamp members to hold the stockagainst accidental displacement during the retraction of theplate 82.Itwill be evident from the preceding description that the stock isclamped andreleased alternately by the members 88'and 90, and that thefeeding movement ofthe stock is permitted by reason of the fact that theclamp member 90, as well as the block 8, is'then in its uppermostposition. The provision for yielding movement of the support 4 againstthe tension of the spring 76, as previously described,'permits stock ofvarying thickness to be clamped between the members 88 and 90.

Mounted upon the support 4 is an edge guide 92 for the stock, this guidebeing adjustable for dies of different lengths through the provision ofa slot 94 in the, guide which cooperates with a guiding pin 96 and aclamping screw 98 to keep "the guide in parallel relation to the properpath of movement of the stock in all positions of its adjustment, thescrew 98 serving to retain the guide in adjusted position. The

slot 94 is formed diagonally tocause the end of the guide to sustainsubstantially the same relation to the adjacent corner of the die in allpositions-of adjustment, without projecting beneath the cutting block.

The die 6 is supported on a carrier 100 which is slidable horizontallyon guides 102 formed on a die support 104 which includes a plunger 106mounted for vertical movement in bearings provided by the plunger 74 andby the frame 2. The plunger 106 at its lower end is connected to one armof a toggle 108 which comprises operating means whereby the plunger isreciprocated, the connection consisting ofa sleeve 109 having right andleft threads on its exterior and interior respectively to permit thesleeve to be screwed at one end within a threaded bore at the lower endof the plunger 106 and to receive within its other end a threaded plug111 upon which the arm of the toggle '108 is pivoted. This constructionpermits the die support to be vertically adjusted relatively to itsoperating means through comparatively short turningmovements of thesleeve 109. The other arm of the toggle 108 is pivoted to the frame 2and 118 in one side of a cam disk 120 on the shaft 10. In the idleposition of the parts, as shown in the drawings, the .die is in itslowermost position, the roll 116 engaging in a concentric portion 6 ofthe cam groove 118 (Fig. 14). Immediately upon the starting of themachine the portion f of the groove approaches the roll, causing the dieto be moved upward through the connecedge embedded in the stock asufficient time to permit it to move laterally to feed the stock. Theportion h of the groove 118 then imparts a further upwardmovement to thedie sufficient to sever the blank, after which the die is returned toits lowermost position, and during the backward lateral movement of thedie the roll 116 is in the.

concentric portion 6 of the groove.

The lateral feeding movements of the die are effected by means whichoperates to slide the carrier 100 forward and backward upon the support104. This means coinprises. a lever 122 pivoted at 124 on the tion of Ythe die.

bracket 12 and connected by a link 126 to a shaft .128 the opposite endsof which are 'journaled in shoes 130 mounted to slide in horizontalguideways 132 formed in the support at. .The shaft 128is also journaledin boxes 134 which are mounted in vertical slots or guideways 186 formedin lugs 138 projecting from the carrier 100. Horizontal movement maythus be imparted to the carrier 100 from'the lever 122throughconnections that are not affected by the vertical die operatingmovements of the carrier hereinbefore described, since by reason of thearrangement of the slots 136 and the boxes 13% the lugs 138 arepermitted to move upwardly and downwardly with the die carrierrelatively to the shaft 128 without movingthe shaft. The lever 122 has aslot 140 curved about the'shaft 128 as a center on a radius equal inlength to the link 126, whereby the link 126v may be connected to thelever at different distances from its axis 12 1 to vary the extent ofthe feed movements of the die carrier for different sizes of dieswithout varying the starting 1905i? Thelever 122 carries at its lowerend; a roll 1&2 engaging in agroove 144 formed in the opposite side ofthe cam disk 120 from the groove 118. By reference to Fig.v 1 1 it willbe seen that the feeding movementwill not begin until the first cuttingmovement of' the die has been com pleted, whereupon the roll 142 will becaused to traverse the outwardly receding portion of the groove 14A,thereby swinging the lever 122 and effecting the forward feedingmovement of the die carrier 100. The

roll is thenpositioned in the outer concen-' tric portion of the grooveduring the sec ond cutting movement and a portion of the followingdownward movement of the die, after which the roll is again forcedinward to cause the die carrier to be retracted to starting position.

The die 6 is held securely in position on the carrier 100 between arigid upstanding ber 1 18 provided with wings 150 mounted to slide onguides 152 on the carrier, the flange and the clamp member having ledgesto support the die, as shown in Figs. 3 and 41. The clamp member 1 18 isoperated upon by screws 15st threaded through upstanding lugs on aportion of the carrier 100 and bearing at their ends against the clampmember to hold the die securely in place. It will be seenthatwhatevermay be the size of the die, the front edge of the die ispositioned invariably in the same location by means of the flange 146,while the clamp member 118 is slidable on the guides 152 in accordancewith variations in the size of the die. In order that the stocksupporting plates 80 and 82 may slide in their guideways in unison withthe movements of the die carrier 100, the plate 80 is provided withdepending pins 156 which enter vertical sockets in the clamp member 148,andrthe plate 82 carries similar pins 158 which enter sockets formed inthe lugs 188011 the front of the carrier 100. This arrangement of pinsand sockets permits vertical movement of the die carrier rela' tively tothe plates 80 and 82, and since the sockets in which the pins 156 engageare formed in the clamp member 1 18, the rear plate 80 will be moved inunison with the ad ust1ng movements of the clamp member to enlarge orrestrict the'widt-h of the opening between the two plates in accordance100 with the size of die in use.' It will be observed that the platessupport the sto'ck' close to the edge of the die, the opening being onlyof sufiicient width to permit the cutting movements of the die.

The die 6 is preferably formed with spurs 160 which enter the stock inthe first cutting movement of the 'die and serve in addition to thecutting edge to insure that the stock shall be carried forward by thedie in 11S feeding movement. These spurs are so to be discharged upon asloping surface 162' j of the support 101 whence they will fall into areceptacle positioned to receive them. The vertical movements of thesupport 10& serve i to insure 'dislodgment of the lifts from the surface162, as will be readily understood. r

In order that the stock shall be utilized economically, the machine isprovided with means for effecting relative displacement of the cuts insuccessive rows in the direction of the feed of the stock adistanceequal sub stantially to half the width of the die, to

.cause the blanks ineach row to be cut from portions of the stock thatare opposite to the intervals between the cuts of the pre ceding row,and the die 6 moreover is provided with a straight blade 164 projectingfrom one side in position to trim off the waste in front of each cut andprovide alined straight edges for engagement with the guide 92, theblade 164 being positioned at such a distance from the end of the die asto cause the blanks in each succeeding row to be cut, in part, fromstock left between the curved ends of the cuts in the preceding row. Themeans for effecting relative displacement of the rows of cuts in thedirection of the feed movements comprises two stops 166 and 168 arrangedto be projected alternately above the plate 80, through slots formed inthe plate, in position to engage the front edge of the sheet of stockand determine its first position for each row of cuts before the machineis started, the gaging ends of these stops be ing relatively displacedin the direction of the feed a distance substantially equal to half thewidth of the die. These stops are operated to cause the one which isuppermost to be withdrawn immediately upon the starting of the machineand to cause them to be projected alternately above the table in gagingposition, by means which will now be described.

The stop 166 is slidably mounted in a guideway formed in a dependingportion 17 0 of the plate 80, and the stop 168 is vertically slidable ina carrier 17 2 the purpose and function of which will be hereinafterdescribed. The two stops are slotted at 174 and 17 6 respectively toreceive studs 178, 180 carried by a rocker arm 182 which is pivoted on alug 184 depending from the plate 80 and is connected by means of apitman 186 to a crank disk 188 mounted on a shaft190 journaled in lugs192and 194 on the plate 80. The opposite end portions of the pitman 186are slidably connected to permit them to yield relatively against thetension of a spring 196 under certain conditions, as will be hereinafterexplained. Mounted rigidly on the rear end of the shaft 190 is a ratchetdisk 198 having diametrically opposite teeth, and mounted loosely on theshaft at opposite sides of the disk 198 are pawl carriers 200, 202carrying respectively pawls 204, 206 spring held in engagement with theperiphery of the disk 198. The pawls 204 and 206 are formed respectivelyfor pulling and pushing action upon the ratchet disk 198. The pawlcarriers 200, 202 are connected respectively by rods 208, 210 to bellcranks 212, 214, pivoted respectively on lugs 216, 218 that; projectfrom the die clamp slide 148. cranks 212, 214 carry rolls 220, 222arranged to engage forward The bell 1 extending arms 224,

springs 244, 246, which tend to move the rods in such direction as todepress the rolls 220, 222 on the bell cranks 212, 214 and swing thedepending portions of the levers 228, 230 to the right (Fig. 6). Sincemovement of the rod 210 under the influence of the spring 246 servesthrough the pawl 206 to turn the ratchet disk 198 and move the stops,while movement of the rod 208 under the influence of the spring 244 onlyserves to move the pawl 204 idly over the crank disk into position toengage a tooth on the disk, the spring 246 is made considerably strongerthan the spring 244. Downward movement of the arms 224, 226 when thelevers 228, 280 are released is limited by stops 247, 249 respectively.

In the drawings, (Figs. 3 and 6) ,the front stop 166 is shown inelevated position with its front end close torthe die, and'a sheet ofstock A. is shown with its front edge in engagement with this stop inposition to receive the first cut. Upon the depression of the treadle tostart the machine, the arm 68 is swung to the right (Fig. 6) and throughthe link 242 and the connections 240, 238 causes the arm 236 to swingthe rolls 232, 234 in a direction to release the levers 228, 230, thuspermitting the springs 244, 246 to move the rods 208, 210 toward theright, swinging the pawl carriers 200, 202 in opposite directions on theshaft 190, whereby the pawl 206 is caused to turn the ratchet disk 198and the shaft 190 a quarter revolution and pushthe tooth which itengages far. enough toqbe caught by the pawl 204 which movessimultaneously into position to engage it. This movement of the shaft190 through the crank disk 188 and the pitman 186 causes the rocker 182to swing far enough to depress the stop 166 below the path of the stock,bringing both stops 166 and 168 to neutral position substantially flushwith or slightly below the upper surface of the plate 182 against theaction of the spring 196 po-: sitioned between the two end portions ofthe pitman 186. When the arm 68 is released from the catch? 2 after arow of blanks has been cut, as will be hereinafter explained, and swingsto its starting position, it causes the rolls 232, 234 to move intoposition to engage the levers 228, 230 at the end of a.

rearwardmovement of the die carrier and thus effect a reversal of themovements of the pawl operat ng connections above de-.

scribed, swinging the levers 228, 280 to lift the rolls 220, 222,thereby causing the bell cranks 212, 21t'to force the rods 208, 210

toward the left (Fig. 6) and impart to the pawl carriers 200, 202reverse movements in opposite directions about the shaft 190 duringwhich the pawl 1 serves to turnthe shaft 190 another quarter revolutionto a the feed of the stock, and when the machine is againstopped thepawl 204 brings the connections to the positions'in which they.

r are shown in the drawings, with the stop 166 once more raised togaging position. In this manner the stock is alternately positioned forcutting different rows of blanks to obtain the effect indicateddiagrammatically in Fig.

15. 'Although the stop 166 has been described as occupying the gagingposition for the first row of cuts on a sheet, it will be apparent thatit is immaterial which of the stops first serves as a gage when a freshsheet is presented;

It will be observed that all the connections for operating the stops 166and 168 move in unison with the die carrier 100 and the table plates and82 during the stock feeding operation, with the exception of the arm236, together with the rolls 232, 28 1, and the gether with theconnections between these bell cranks and the stops 166, 168, which aresupported on the plate 80, will move in unison with the clamp and theplate during the adjustment of the clamp, the rolls 220, 222 at suchtime moving lengthwise of the arms 224, 226. The bell cranks 212, 214;and the levers 228, 230 will also have a slight vertical movement withthe die carrier in the cutting operation of the die without materiallyaltering the positions of other elements of the stop operatingmechanism.

In order to vary the distance between the stops to correspond todifferences in the width of different dies, the machine includesprovision for adjustment of the stop 168 lengthwise of the table plate80 in proportion to the extent of adjusting movement of the dieclamp148. To this end the carrier 172 in which, as previouslyexplainechthe. stop 168 is vertically movable is formed on the end of atoothedrackbar 248 '(Fig. 9), which is slidablymounted in an extendedguideway formed in a lug 250 thatdepends from the plate 80, the teeth ofthe rack bar 2&8 engaging apinion 252 carried by a shaft 254: which isjournaled in bearings'in'the lug, 250 and in a bracket 256 that dependsfronr the plate-80. On the shaft 254 is secured also I a larger pinion258 the teeth of which engage vents the'rack 260 from moving relativelyto the carrier Asthe clamp slide 1 18 and the plate 80, therefore, aremoved in adjustment in one direction or. the other, the shaft 254 willbe rotated through the engagement of the pinion 258 with the stationaryrack 260, and through the pinion 252 and the rack 248 the stop 168 willbe moved relatively to.

the plate 80 in the direction of movement of the plate. The pinions 252and 258 are so proportioned as to cause the stop 168 to move half thedistance of the plate 80 and the clamp 1 18 in either direction, thusmaintaining the distance longitudinally of the table between the stockengaging ends of the. stops 166 and 168 equal to half the width of thedie forall sizes of dies. The elongated slot 176 in thestop 168 permitsadjustment v of the stop relatively to the rocker 182.

Upon the depression of the treadle 24, the arm 68 is swung into positionto cause the lug 70 to be caught by the latch T2, whereby the continuousoperation of the machine while cutting a row of blanks is insured, as

previously explained In-order to stop the machine automatically afterthe row of blanks has been cut, the machine is provided with mechanismarranged to be controlled by the sheet of'stock for effecting therelease of member 68. This mechanism comprises a member 272 arranged toproject normally above the table in position to engage the sheet ofstock 011 its lower side, this member being carried by an arm 274secured to a rock shaft276 which is mounted in lugs 278 on the lowerside of'the table slide 82. On the rear end of the shaft 276 is securedan arm 280, and a spring 282attached at one end to this arm and at itsother end to the shaft 128 tends to maintain the-rock shaft 27 6 in suchposition as to cause the member 272 to project considerably above thetable plate 82 and the bars 88. The latch 72' is there is no stock uponthe table the member 272, through the action of the spring 282, ismaintained in its uppermost position and the roll 290 in its lowermostposition, thus causing the arm 28% to position the latch 72 be low thepa h of movement of the lug 7 0 determined by the swinging of the arm68. The tension of the spring 282 and the weight of the parts are soproportioned as to permit the member 272 to be depressed normally by theweight of a sheet of stock above it, and consequently when a sheet isplaced upon the table the depression of the member 272 effects theoperation of the described,

- connections in such manner as to elevate the latch '72 in position tocatch and engage the lug 7 0 when the starting treadle is depressed, andthe latch is maintained in its operative position as long as any portionof the stock remains above the member 272. Should the weight of thestock not be suflicient to hold the member 272 depressed, particularlytoward the end of a series of cutting operations, the close relation ofthe cutting block 8 and the clamp member 90 to the stock will besufficient to keep the member depressed as long asa-ny stock remainsbetween the member and the block since the reciprocatory movements ofthe block during the operation of the machine, as previously explained,are veryshort. As soon as the member 272 slides from under the stockupon any backward movement of the die following a forward feed movement,the member will rise and cause the latch 72 to release the arm 68,whereby the operation of the machine will be stopped, as previouslyexplained. It will be noted that the member 272 is so close to the diethat its forward edge projects slightly beyond the outward curve of thecutting edge on the side toward the member. In consequence of thisrelation, the machine will not be stopped while any portion of the stockremains of sufiicient width to provide a complete blank, but will bestopped in time to prevent an incomplete blank from being cut by thedie.

The connections between the cutting block 8 and the sleeve plunger 32 bywhich the block is supported comprise a member 292 which screws withinthe plunger 32 to permit vertical adjustment of theblock relatively toits operating means, and a plate 29 1 to the lower side of which theblock is clamped, this plate being pivoted to turn in a horizontal planeon a bearing screw 2% threaded in the 'member'292. In order to impartturning movements to the block for the purpose of rendering the wear uniform on all portions of the working surface, the plate 294 is formedwith ratchet teeth on its upper surface adjacent to its periphery, andan operating pawl 298 for engagementwith these teeth is pivotallysupported on a bell crank 300 ,pivotally mounted on the frame. Through apin and slot connection indicated at 302 (Fig. 2) beween the bell crank300 and the'block operating rod '56, the bell crank is operated to causethe pawl to turn the block a short distance during the upward movementof the block, the pawl being retracted through the same means to engagethe next ratchet tooth during the downward movement of the block. Thelost motion connection provided by the pin and slot arrangement in-'sures that the block shall not begin to turn until it has been movedfrom engagement with the stock.

In the operation of the machine, with the parts positioned as shown inthe draw ings, a sheet of stock A, such as leatherboard, the edges ofwhich are substantially straight, is placed in position with its sideeoge in engagement with'the guide 92 and its front edge in engagementwith the uprai'sed stop 166. The weight of the stock depresses themember 272 and thereby causes the latch 72 to be elevated. The operatornet; depresses the treadle 24: to rock the shaft 22, thereby swingingthe arm 68 and through the straightening of the toggle 60 bringing theblock 8 downward to its lowermost position. At the same time the clutchis released by the latch 20, and the arm 68 through the engagement ofthe lug 70 with I the latch 72 is caught and retained in'the position towhich it is swung by the treadle. The movement of the arm 68 to theright also serves to release the levers 228 and 230 and cause the stop166 to. be withdrawn from the pathof movement of the stock. As the shaft10 begins to turn, the die 6 is moved upwardly a sufficient" distance tocause its cutting edge, and alsothe spurs 160,- to be forced part waythrough the stock. At the end of this initial cutting movement of thedie the block 8 and the clamp member 90 are slightly raised in order topermit'the stock to be fed. The die carrier and the parts connectedtherewith, including the table plates 80 and 82, are now moved forwardlya distance substantially equal to the width of the die to advance thestock into position for the next out following the severence of thepartially cut blank. At the completion of the forward feed movement ofthe die the block 8 is again moved to its lowermost position and the dieis forced farther upwardly to members 88 and 90 prevent retraction ofthe stock while permitting the table to slide freely under the stock.This series of move- I I ments is repeated until finally the controllingmember 272 is released and the machine stopped 1n the manner pointedout.

' 'As the arm 68 returns to its starting position the levers 228 and 230are operated in the manner previously described to cause i the otherstop 168 to be projected above the table. V

I During the operations described the operator preferably holds theouter edge of the sheet, particularly while the-first few rows are beingcut, and upon the completion of one series of cutting operations hecarries the sheet again to starting position and places it with theedges formed by the straight blade 164 in contact with the guide 92 andwith its forward edge in engagement with that stop 166 or 168 which isuppermost. Should any portion of the waste remain unsevered by the blade164:, it should be removed by the operator before the sheet ispositioned for the next series of cuts It will be evident that theprovision for movement of the die to feed the stock before the die hascompleted its out through the stock insures an efi ective engagement ofthe die with the stock to feed it, even though no substantial portion ofthe material of the sheet remains in advance of the die at the time ofits feed movement. The arrangement of the spurs 160, moreover, to engagea portion of the material which is at the side of the die next to theuncut portion in the line of feed further insures a positive and exactfeed by reason of the fact that the material engaged by the spurs isfirmly united to the sheet.

Having described the invention, what I claim as new and desire to secureby Let ters Patent of the United States is:

1. A machine of the class described having, in combination, a cuttingblock, a die, means for effecting successive relative movements of saidblock and die to cause the die first to cut partly through the stock andthen to complete the cut, and means for mov ing the die to feed thestock in the interval between said two relative cutting movements ofthedie and the block.

2. A machine of the class described having, in combinatioma cuttingblock, a die, means for moving the die toward the block to cause the dieto cut a blank from the stock progressively in two successive cuttingmovements, and means for moving the. die 1n the interval between saidtwo cutting -movements to feedthe stock into position to permit the dieto cut another blank.

7 3'. A machine of the class described having, in combination, a cuttingblock, a die, means for effecting successive relative move ments of saidblock and dieto cause the die first to cut partly through the stock andthen to complete the cut, means for moving the die to feed the stock inthe interval between said two relative cutting movements of the die andthe block, and means for moving the block in a direction away from thedie prior to the feeding movement of the die. V r

4. A machine'of the class described having, in combination, a cuttingblock, a die,

means'rfor moving the die progressively toward the'block in twosuccessive steps to cause it first to cut partly through the'stock andthen to complete thercut, means for moving the die in the intervalbetween said two cutting movements to feed the stock, and means formoving the block in a direction away from the die prior to said feedingmovement and toward the die at the end of said feeding movement.

5. A machine of the'class described having, in combination, a cuttingblock, a die, means for moving the die to feed the stock, and means foreffecting relative movement of the block and die at the end of thefeeding movement of the die to sever a blank from the stock.

6. A machine of the class described, having, in combination, a cuttingblock, a die, means for moving the die to feed the stock, and means formoving both the die and the block toward each other at the end of thefeeding movement of "the die to sever a blank from the stock.

, 7. A machine of the class described having, in combination, a cuttingblock,'a die, means for moving the die to feed the stock, and means formoving the die toward the block to effect a preliminary engagement withthe stock prior to said feeding movement andfor moving the die farthertoward the block to sever a blank from the stock at the end of saidfeeding movement.

8. A machine of the class described hav- 9'. A machine of the classdescribed having. in combination, a die constructed and arranged to cutand remove shoe part blanks from a sheet of stock close to an edgethereof and contiguous to an opening left by the removal of a precedingblank, said die being operable also to feed the stock, a cutting blockabove the die, means for moving the die upward to cut the stock, andmeans for moving the die in such a way as to feed the stock laterally.

10. In a machine for cutting blanks from sheet stock, a cutting block, adie, and means for causing the die to cooperate with different arealportions of the block to cut a single blank from the stock.

11. In a machine for cutting blanks from sheet stock, a cutting block, adie, and means for operating the die to cut shoe part blanks and to feedthe stock from which the blanks are out after the beginning of a cuttingoperation for a given blank and before the cutting operation results in.the complete severance of said blank.

12. A machine of the class described having, incombination, a cuttingblock, a die support movable toward and from said block, a die carriermounted on said support for movement transversely of the direction ofmovement of the support, a die on said carrier, and means for operatingsaid support and carrier to effect respectively the cutting and thefeeding of the stock.

13. A machine of the class described having, in combination, a die, acutting block above the die, a die support, means for moving saidsupport upwardly to cause the die to cut the stock, a die carriermormted to slide on said support transversely of the direction ofmovement of the support, and means for operating said carrier to causethe die to feed the stock.

14. A machine of the class described, having, in combination, a cuttingblock, a die, a table for supporting a sheet of stock between the blockand the die, means for effecting relative movement of the block and thedie to cut the stock, and means for moving the die and the tablerelatively to the cutting block in a direction to feed the stock.

15. A machine of the class described having, in combination, a cuttingblock, a die, a table for supporting a sheet of stock between the blockand the die, means for effecting relative movement of the block and thedie to cut the stock, means for moving the die and the table relativelyto the cutting block to feed the stock and for then retracting the dieand the table, and means for preventing retractive movement of the stockwith the table.

16. In a machine of the class described, a

the table forwardly in unison with feeding movements of the stock andfor retracting the table after each feeding movement, and means forclamping the stock in a plane above the stock supporting surface of thetable to prevent it from being retracted with the table.

17. In a machine of the class described, a stock supporting table, meansfor moving the table forwardly in unison with feeding movements of thestock and for retracting he table after each feeding movement, the tablebeing provided with a slot, a clamp member positioned in said slot forengagement with the lower side of the stock, and a clamp member over thestock arranged to cooperate with said lower clamp member to prevent thestock from being retracted with the table.

j 18. In a machine of the class described, a stock supporting table,means for moving the table forwardly in unison with feeding movements ofthe stock and for retracting the table after each feeding movement, aclamp member for engaging the stock on its lower side, a cutting blockpositioned over the table and movable v toward and from the table, and aclamp member movable with the cutting block and arranged to cooperatewith said lower clamp member to prevent the stock from being retractedwith the table. v

19. In a machine of the class described, a stock supporting table, meansfor moving the table forwardly in unison with feeding movements of thestock and for retracting the table after each feeding movement, a

clamp member having a clamping surface projecting above the stocksupportingsurface of the table in position to engage the lower side ofthe stock, a cutting block movable toward and fromthe table, and a clampmember movable with said block and having a clamping surface insubstantially the same plane as the working surface of the block, saidlast named clamp member being arranged to cooperate with the lower clampmember to control the position of the stock during the retraction of thetable.

20. In a machine of the class described,

the combination with stock feeding means and a cutting block movabletoward and from the stock, of means for controlling the position of thestock comprising a substantially stationary clamp member and aiclampmember movable with theblock and arranged to cooperatewith saidstationary clamp member to clamp and release the stock alternately. V I21. A machine of the class described having, in combination, a die, acutting block movable toward and from the die, means for effectingrelative movement of the block stock supporting table, means for movingand the die to cut the stock, means for initi ating said relativemovement comprising a starting member, and means connecting said memberto the block to cause the block to be moved initially toward the die bysaid member.

22. A machine of the class described having, in combination, a die, acutting block movable toward and from the die, means for reciprocatingthe block, means for initiating the operation of the machine comprisinga manually operated starting member, and means connecting said member tothe block to cause the block to be moved by said member to an initialstarting position.

23. A machine of-the class described having, in combination, a die, acutting block movable toward and from the die, a power shaft,connections between said shaft and the block for reciprocating theblock, said connections including a toggle arranged to be operated whilethe machine is idle to effect relative movement of portions of saidconnections to cause the block to approach or recede from the die. amanually operated starting member, and means for operating the togglefrom said member to cause the block to be moved toward the die by thestraightening of the toggle prior to its reciprocation by the powershaft.

24:. A machine of the class described having, in combmation, a (he, acutting block movable toward and from the die, a power shaft,connections between said shaft and the block for reciprocating theblock, said connections including a toggle arranged to be straightenedor broken to render said connections operative or inoperativerespectively, and manually ope ated means for operating said toggle.

25. A machine of the class described having, in combination, a die, acutting block, means for effecting a series of relative movements ofsaid die and block to cut a plurality of blanks fromthe stock, means forstarting the machine and means controlled by said starting means forshortening the distance between the die and the block prior to theinitiation of said series of relative cutting movements. 1

26.'A machine of the class described having, in combination, a die, acutting block, manually operated means for moving the block initiallytoward the die, and power operated means, operating in properly timedrelation with respect to said manually operated means, for effectingrelative move- .Inentof the die and the block to cut the block initiallyinto position to oppose the cutting action of the die.

28. A machine of the class described having, in combination, a die, acutting block above the die, means for supporting a sheet of stockbetween the die and the block, power operated means for reciprocatingthe block and the die, a manually operated starting member, .and meansconnecting said member to the block to cause the block to be movedinitially to its lowermost position by said member.

29. A machine of the class described having, in combination, a die, acutting block above the die, a stock supporting table between the dieand the block, means for maintaining the block upraised from the tablewhen the machine is at rest to permit the stock to be positioned on thetable, manually operated means for initially lowering the block intoposition to oppose the cutting action of the die, and power operatedmeans for effecting relative cutting movement of the die and the block.

30. A machine of the class described having, in combination, a die, acutting block, a stock supporting table between the die andthe block,means for effecting relative movements of the die and the block toperform a series ofcutting operations, manually operated means forinitiating said relative movements, and clamping means for controllingthe position of the stock onthe table arranged to be operated by saidmanual means to clamp the stock prior to the first cutting operation.

31; A machine of the class described having, in combination, a die, acutting block, means for effecting relative movement of the die and theblock to cut the stock, and means for clamping the stock to control itsposition in the machine comprising a clamp member movable toward. orfrom clamping position and a cooperating clamp member yieldable toaccommodate differences in thickness of the stock.

32- A machine of the class described having, in combination, a die, acutting block, means for effecting relative movement of the die and theblock to cut the stock, a stock support, means for clamping the stock onsaid support, and means for yieldingly upholding said support toaccommodate differences in thickness of the stock.

A machine of the class described having, in combination, a stocksupport, a cutting block mounted above the support and movable towardand from said support, a clamp member movable with said block to clampthe stock upon the support, and means for yieldingly upholding saidsupport.

34L. In a machine of the class described, the combination with a frame,of a cutting block and a die relatively movable to cut the stock, and astock support arranged to present a sheet of stock for the action ofsaid block and die, said support being provided with a dependingplunger, a socket in the frame to receive said plunger, and a spring inthe socket for yieldingly upholding the plunger.

35. In a machine of the class described, the combination with a frame,of a stock support provided with a depending plunger, a socket in theframe to receive said plunger, a spring in said socket for yieldinglyupholding said plunger, a cutting block above the support, and a diesupport mounted for reciprocatory movement in said plunger to carry adie toward and from the cutting block.

36. A machine of the class described having, in combination, a diecarrier, a die on said carrier, a cutting block over the die, a tablefor supporting a sheet of stock between the block and die, means formoving the carrier to feed the stock, and means connecting the table tothe carrier to cause the table to move with the carrier.

37. A machine of the class described having, in combination, a diecarrier, a die on said carrier, a cutting block over the die, a tablefor supporting a sheet of stock between the block and the die, means formoving the carrier to feed the stock, means supporting the table forsliding movement with the carrier, pins depending from the table, andsockets in the die carrier for receiving said pins to cause the table tomove in unison with the feeding movement of the carrier.

38. A machine of the class described having in combination, a diecarrier, a die on said carrier, a cutting block over the die, a tablefor supporting a sheet of stock between the block and the die,means formoving the carrier toward the block to cause the die to cut the stockand also laterally to feed the stock, and means connectingthe table tothe carrier to cause thetable to move in unison with the feedingmovement of the carrier, said connecting means being constructed topermit the carrier to move relatively to the table in its movementtoward the block.

39. A machine of the class described having, in combination, a diecarrier, a support for said carrier, means for moving said support tocause the die to cut the stock, and means for moving the carrierrelatively to the support to feed the stock, said last named means beingconstructed to maintain the carrier in fixed relation to the supportduring said movement of the support.

40. A machine of the class described having, in combination, a diecarrier, a support for said carrier, means for moving said sup port tocause the die to cut the stock, and

connections for moving the carrier rela-.

movement of said support to maintain the carrier in fixed relation tothe support dur-' ing said cutting movement.

41. A machine of the class described having, in combination, a diecarrier, a support for said carrier, and connections for moving thecarrier relatively to the support to cause the die to feed the stock,said connec tions comprising portions relatively adjustable to vary thelimit of feeding movement of the carrier without varying the startingposition of the carrier.

42. A machine of the class described having, in combination, a die,'acutting block, means for effecting relative movement of the die and theblock to cut the stock, means for moving the die to cause the stock tobe fed through the engagement of the die with the stock, and additionalmeans for engaging waste portions of the stock to insure movement withthe die.

43. A machine of the class described having, in combination, a die, acutting block, means for effecting relative movement of the die and theblock to cut the stock, means for moving the die to feed the stock, anda spur on the die for engaging the stock to insure the movement of thestock with the die.

44. A machine of the class described having, in combination, a die, acutting block, means for effecting relative movement of the die and theblock to cut the stock, means for moving the die to feed the stock, anda spur near each end of the die arranged to engage a Waste portion ofthe stock to insure the movement of the stock with the die.

45. A machine of the class described having, in combination, a die, acutting block, means for relatively moving the die and the block toeffect a series of cuts along one side of a sheet of stock, an edgeguide for the stock, and a blade having a cutting edge opposed to theblock and extending in a line intersecting the die in substantiallyparallel relation to the path of movement of the stock to "sever thewaste material between successive cuts and provide substantiallystraight edges for engagement with the edge guide during a subsequentseries of cutting operations.

46. A machine of the class described hav I ing in combination, a die, acutting block, means for relatively movingthe die and he block to eifecta series of cuts along one side of a sheet of stock, and a blade mountedon the die and extending longitudinally of the path of movement of thestock between the ends of the die to sever the waste material betweensuccessive cuts.

47. A machine of the class described having, in combination, a die, a:cutting block, means for relatively moving the die and the block toeffect a series of cuts alongone side I 7 and for maintaining the stopout of the path ends, and a blade mounted on and extend ing laterallyfrom the die in substantially parallel relation to the line of cuts andat a distance from one end of the die to sever the waste materialbetween successive cuts and permit a subsequent series of cuts to bemade partly from material left between the cuts of the preceding'series.

48. In a machine of the class described, the combination with a cuttingblock, of a double heel lift die for cutting a pair of lifts with theirbreast ends adjacent, means for relatively moving the die and the blockto effect a series of cuts along one side of a sheet of stock, and ablade mounted on and extending from one side of the die insubstantially'parallel relation to the line of cuts and at a distancefrom one end of the die in position to sever the waste material betweensuccessive cuts.

49, A machine of the class described having, in combination, a die, acutting block, means for effecting relative movements of the die and theblock to cut a plurality of blanks in succession from a sheet of stock,a stop at the rear of the die for determining the first position of thestock in the machine,and means for withdrawing the stop to permit thestock to be fed, said last named means being constructed and arranged tomaintain the stop in an idle position during the continued operation ofthe machine.

50. A machine of the class described having, in combination, a die, acutting block, means for effecting relative movements of the die and theblock to cut a plurality of blanks in succession from a sheet of stock,a table for supporting the stock between the die and the block, a stoparrai'iged to project above said table at the rear of the die todetermine thefirst position of the stock in the machine, and means forlowering said stop to permit the stock to be fed.

51. In a machine of the class desi'zribed, the combination with a stocksupporting table, of a cutting block positioned over the table andmovable toward and from a sheet of stock on the table, a stop arrangedto be projected above the table to determine the first position of thestock, and means for operating said stop including parts relativelymovable against yielding resistance to permit the stop to be depressedby the cutting block.

.52. In a machine of the class described, the combination with means forcutting a plurality of blanks in succession from a sheet of stock, of astop for engaging an edge of the stock to position it for the firstcutting operation, and means for withdrawing the stop to permit thestock to be fed of movement of the stock during the continued operatlonof the machme.

53. In a machine of the class described, the combination with means forperforming a series of operations in succession upon a sheet of stock,of a stop for engaging an edge of the stock to determine the firstposition of the stock in the machine, means movable to start the machineand means for moving said stop to an idle position in unison with themovement of said starting means.

54. In a machine of the class described,

the combination with means for performing a series of operations insuccession upon a sheet of stock, of a stop for engaging an edge of thestock to determine the first position of the stock in the machine, meansmovable to start the machine, and connections between the stop and saidstarting means to cause the stop to be moved to'an idle position uponthe movement of the starting means to start the machine.

55. In a machine of the class described, the combination with means forperforming a series of operations in succession upon a sheet of stock,of a stop for engaging an edge of the stock to determine the firstposition of the stock in the machine, said stop being movable into orout of operative position, means for stopping the operation of themachine, and means for moving the stop into operative position in unisonwith the movement of said stopping means ,to stop the machine.

56. In a machine of the class described, the combination with means forperforming a series of operations in succession upon a sheet of stock,of a stop for engaging an edge of the stock to determine the first position of the stock in the machine, said stop being movable into or outof operative position, a controlling member movable in one direction tostart the machine and in the opposite direction to stop the machine, andmeans connecting said controlling member to the stop for moving the stopinto operative position through the movement of said member to stop themachine.

57. 11 a machine of the class described, the combination with means forcutting a plurality of blanks in successive'rows from a sheet of stock,of a pair of interconnected stops for determining respectively differentinitial positions of the stock, and means for moving the different stopsinto operative position alternately upon the completion of successiverows of cuts.

58. In a machine of the class described, the combination with means forcutting a plurality of blanks in successive rows from a sheet of stock,ofa pair of stops for determining respectively different initialpositions of the stock, the stops being movable alternately intooperative position, and means operative in time relation to the movementof said cutting means for Withdrawing a stop from operative position topermit the feeding of the stock as the machine starts to cut a row ofblanks and for moving the other stop into operative position after saidrow of blanks has been cut.

59. In a machine of the class described, the combination with means forcutting aplurality of blanks in successive rows from a sheet of stock,of a pair of stops for determining respectively different initialpositions of the stock, means for stopping the machine after each row ofblanks has been cut, and means for moving said stops into operativeposition alternately through successive movements of said stopping meansto i stop the machine.

60. In a machine of the class described, the combination with means forcutting a plurality of blanks in successive rows from a sheet of stock,of a pair of stops for determining respectively diflerent initialpositions of the stock, a controlling member movable in one direction tostart the machine and in another direction to stop the machine, andconnections between said member and the stops to cause a stop to bewithdrawn from operative position upon the starting of the machine andthe other stop to be moved into operative position upon the stopping ofthe machine.

61. In a machine of the class described, the combination with a cuttingblock and a die, of a pair of stopsat the rear of the die fordetermining respectively different initial positions of the stock in themachine, one of said stops being positioned in the rear of the other ata distance of substantially half the width of the die, and means forcausing said stops to be alternately positioned for engagement with thefront edge of the stock.

62. In a machine of the class described, the combination with a cuttingblock and a die, of a table for supporting a sheet of stock between theblock and the die, and a pair of stops arranged to be projectedalternately above the table for determining different initial positionsof the stock, the construction and arrangement being such that theprojected stop may yield downwardly to pressure from above.

68. In a machine of the class described,

the combination with a die support, of means for securing dies ofdifferent sizes in position on the support, a pair of stops fordetermining respectively different initial positions of the stock withrespect to the die, and means for causing said stops to be relativelypositioned in accordance with the size of the die. v

64. In a machine of the class described, the combination with a diesupport, of means for securing dies of different sizes in position onthe support, a pair of stops for determining respectively differentinitial positions of the stock with respect to the die,

and means for causing said stops to be relatively spaced at a distanceof substantially half the width of the die whatever the size of the die.

65. In a machine of the class described,

different initial positions of the stock with respect to the die, andmeans for effecting relativev adjustment of the stops through themovement of the clamp member.

66. In a machine of the class described, the combination with a diesupport, of a clamp member adjustable to secure dies of different sizesin position on the support, a pair of stops for determining respectivelydifferent initial positions of the stock with respect to the die, one ofsaid .stops being adjustable in unison with the clamp memher, andconnections between the clamp member and the other stop for effecting aproportional adjustment of said other stop rela tively to the firstnamed stop.

67. In a machine. of the class described, the combination with a'diesupport, of a clamp member adjustable to secure dies of different sizesin position on the support, a pair of stops for determining respectivelydifferent initial positions of the stock with respect to the die, saidstops being movable with the clamp member, and means for imparting toone of the stops an additional movement relatively to the clamp memberin the same direction and equal to substantially lgalfthe distance ofmovement of said mem- 68. In a machine of the class described, thecombination with a cutting block and a die, of a table for supporting asheet of stock between the block and the die, said table comprising twoportions spaced for the reception of the die and relatively adjustableto accommodate dies of different sizes.

69. In a machine of the. class described, the combination with a cuttingblock and a die, of a table for supporting a sheet of stock between theblock and the die, the table comprising a front and a rear portionspaced for the reception of the die, and means for securing dies ofdifferent sizes in the same relation to the front portion of the table,the rear portion of the table being adjustable in accordance with thesize of the die.

70. In a machine of the class described, the combination with a cuttingblock and a die, of a table for supporting a sheet of stock between theblock and the die, the table comprising a front and a rear portionspaced for the reception of the die, a die support having means forpositioning dies of different sizes in the same relation to the

